To be perfectly honest I don't care if Zen's not as good IPC as Kaby. I'm not after top benchmark scores, frankly I couldn't care less about them. The only reason I use benchmarks is to make sure the system is performing as it should without problems.
The simple fact is, by the looks of it we will finally have some sort of competition in the CPU market.
What I care about is the fact that we could end up with 90% of the performance for around 50% of the cost.
I bought my i5 cpu in 2012 that had 4 cores, over 5 years later Intel are still churning out 4 cores for the i5 range, (same goes for the i3 and i7) All we've had in over 5 years from Intel is a slight increase in IPC and max attainable frequency
AMD finally look to have brought some movement to the intel stagnation.
4c/4t in the same price bracket as intels 2c/4t chip
4c/8t and 6c/12t chips to intels 4c/4t chip
and a true 8c/16t chip to the same price bracket as intels 4c/8t
That's why I'm looking forward to this release more than anything in the last 5 years. Finally what looks to be a proper upgrade path without having to pay much more than I did 5 years ago, because up until this release, all that would have got me was yet another 4c/4t CPU